COMETIC

Cometic MLS- PERFORMANCE HEAD GASKET 90Mm Bore .051 (H1796SP2051S)
FITS  Nissan Sr20DET / SR20DE / SR20 ENGINE

The part number H1796SP2051S (often listed with the prefix CMH1796SP2051S) refers to a Cometic Multi-Layer Steel (MLS) head gasket designed specifically for the Nissan SR20 engine series. 

Vehicle & Engine Compatibility
This gasket is a performance upgrade primarily used for the following Nissan models equipped with the SR20DET or SR20DE engines: 

Nissan Silvia / 200SX (S13, S14, S15)
Nissan Pulsar (N14, N15)
Nissan Bluebird 

The part number H1796SP2051S corresponds to a Cometic MLS head gasket designed for the Nissan SR20DET engine—specifically the 90 mm bore version, .051‑inch thickness. It's commonly used in Nissan Silvia S14 and S15 models equipped with the SR20DET turbocharged engine 

✅ Fitment:
Engine: Nissan SR20DET (2.0 L turbocharged, 4‑cylinder)

Vehicles: Nissan Silvia S14 & S15 chassis

Bore Size: 90 mm

Thickness: .051″ (about 1.29 mm)

Construction: MLS (multi-layer steel)

🛠️ Why Choose This Gasket:
Cometic MLS gaskets are high performance with excellent sealing on aluminum-to-aluminum or aluminum-to-iron surfaces—ideal given the SR20’s aluminum head and block 

💲 Price & Availability:
Priced around AU$165, stocked in Australian and New Zealand performance parts outlets .

Also listed on eBay Australia for approximately AU$206 

🧾 Summary Table
Specification    Details
Part Number    H1796SP2051S
Car Fitment    Nissan Silvia S14/S15 (SR20DET)
Bore Size    90 mm
Thickness    .051″
Gasket Type    MLS (Multi-Layer Steel)